diff --git a/src/api/common/schemas/payment.json b/src/api/common/schemas/payment.json
index ca0ae111..bab67180 100644
--- a/src/api/common/schemas/payment.json
+++ b/src/api/common/schemas/payment.json
@@ -6,10 +6,6 @@
     "source": {"$ref": "adjustment"},
     "destination": {"$ref": "adjustment"},
     "paths": {"type": "string"},
-    "slippage": {
-      "description": "An optional cushion for the source_amount to increase the likelihood that the payment will succeed. The source_account will never be charged more than source_amount.value + source_slippage",
-      "$ref": "value"
-    },
     "memos": {
       "type": "array",
       "items": {
diff --git a/src/api/transaction/payment.js b/src/api/transaction/payment.js
index 15346a51..32344d23 100644
--- a/src/api/transaction/payment.js
+++ b/src/api/transaction/payment.js
@@ -1,7 +1,6 @@
 /* @flow */
 'use strict';
 const _ = require('lodash');
-const BigNumber = require('bignumber.js');
 const utils = require('./utils');
 const validate = utils.common.validate;
 const toRippledAmount = utils.common.toRippledAmount;
@@ -72,10 +71,7 @@ function createPaymentTransaction(account, payment) {
     // temREDUNDANT_SEND_MAX removed in:
     // https://github.com/ripple/rippled/commit/
     //  c522ffa6db2648f1d8a987843e7feabf1a0b7de8/
-    const maxValue = new BigNumber(payment.source.amount.value)
-      .plus(payment.source.slippage || 0).toString();
-    const maxAmount = _.assign({}, payment.source.amount, {value: maxValue});
-    transaction.sendMax(toRippledAmount(maxAmount));
+    transaction.sendMax(toRippledAmount(payment.source.amount));
 
     if (payment.paths) {
       transaction.paths(JSON.parse(payment.paths));